Free Money Finance dredged a fascinating statistic from Kiplingers that suggests 60% of homes are overvalued by assessors, and that 33% of tax appeals succeed. The stat comes from a dubious source, the National Taxpayers Union, described by the San Francisco Chronicle as the “the grand-daddy of the tax revolt organizations.” Assessments guide property taxes, which are universally reviled by homeowners. Even politicians, who suckle tax revenue with the vigor of a vampire on a vein, regularly crusade against property taxes during election season.